Electrical Problems (fuse box question) 1973 Duster

speedotann hae you check your ground straps front and rear ?????

I checked the grounds, all in tact and good. I was screwing around the other day with underneath the dash and I flipped my lights on and they worked. Then I started to trace the brake light problem. After that stumped me, I tried the headlights again and they do not work anymore!! I am getting so Pissed. Should I call out a Mobile auto electrician ($25hr) to check it out? I have done everything else by myself (from rolling car).

Thanks,
B